An error-detection mechanism in reading among dyslexic and regular readers - An ERP study
An error-detection mechanism in reading among dyslexic and regular readers - An ERP study
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DOI：
10.1016/j.clinph.2008.06.009
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发表时间：
2008-10-01
影响因子：
4.7
通讯作者：
Breznitz, Zvia
中科院分区：
文献类型：
--
作者：
Horowitz-Kraus, Tzipi;Breznitz, Zvia
目的：本研究在前人研究的基础上，进一步探讨了阅读障碍者的错误检测负性（ERN/Ne）和正确相关负性（CRN）。更具体地说，鉴于阅读中涉及的词汇和语义过程，本研究试图揭示正常和阅读障碍者在ERN/Ne和N400波幅和潜伏期方面存在差异的原因。方法：采用视觉词汇判断范式和事件相关电位（ERP）分析。与正确反应相比，阅读障碍者错误反应的ERN/Ne幅度较低，延迟时间较长。阅读障碍者的ERN/Ne和CRN振幅之间的差异较小。此外，较晚的N400成分引起的错误反应，在两组Readers.Conclusion：一个不同的错误检测活动水平之间的阅读障碍被发现在阅读。我们的研究结果指出了一个可能的模式，大脑处理不正确的阅读的诵读困难。这个模型可以用来解释成人代偿性阅读障碍者尽管多年来大量接触印刷品，但重复阅读错误的原因。(c)2008年国际临床神经生理学联合会。由Elsevier爱尔兰有限公司出版。保留所有权利。
Objective: As a continuation of a previous study which demonstrated the existence of the error-monitoring mechanism among regular readers, the current study attempts to characterize the error detection negativity (ERN/Ne) and the correct-related negativity (CRN) among dyslexics. More specifically, given the lexical and semantic processes involved in reading, the study attempts to reveal the reasons for differences between regular and dyslexic readers with respect to the ERN/Ne and N400 amplitudes and latencies.Methods: A visual lexical decision paradigm and event-related potential (ERP) analysis were used.Results: Dyslexics exhibited lower ERN/Ne amplitudes and later latencies in error responses as compared to correct responses. A smaller difference between the ERN/Ne and CRN amplitudes among dyslexics was observed. In addition, a later N400 component was elicited for error responses in both groups Of readers.Conclusion: A different error-detection activity level among dyslexic readers was found in reading.Significance: These results emphasize the differences in brain activity among regular and dyslexic readers. Our results point at a possible model of brain processing of incorrect reading among dyslexics. This model can be used to explain the reasons for repeated reading errors among adult compensated dyslexics despite extensive exposure to print over the years. (c) 2008 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.